I'm trying to project a polygon onto a model building (loaded as a ModelLayer). I tried FeatureNode and ImageOverlay, but they just overlay to the terrain.
I used to do this using osgSim::OverlayNode and that worked well. But I want to manage all data using osgEarth layers instead of raw osg::Node. Is it possible with osgEarth? Can you give me some hints or point me to the related sample?